I'm trying to get the VideoDisplay to work in FB 4.5.1 for mobile (Android) but it won't display when run in the debugger! I can change it to VideoPlayer and it shows. Here is the relevant parts of the code:

But, whether I use VideoDisplay or VideoPlayer, neither play the stream. I checked the rtmpPath and rtmpStream and they are correct. I can also validate that the stream is actually playing with another application that plays the audio/video. What am I doing wrong?